1 | #!/usr/bin/perl -w |
---|
2 | # MythWeather-revamp script to retreive weather information from Environment |
---|
3 | # Canada. |
---|
4 | # |
---|
5 | # Most of this code was taken directly from Lucien Dunning's |
---|
6 | # (ldunning@gmail.com) PERL scripts. Kudos to Lucien for doing all of the |
---|
7 | # hard work that I shamelessly stole. |
---|
8 | # |
---|
9 | # TODO Code clean up and organization |
---|
10 | |
---|
11 | use strict; |
---|
12 | use LWP::Simple; |
---|
13 | use Date::Manip; |
---|
14 | use Getopt::Std; |
---|
15 | use ENVCANLocation; |
---|
16 | use ENVCANParser; |
---|
17 | use Data::Dumper; |
---|
18 | |
---|
19 | our ($opt_v, $opt_t, $opt_T, $opt_l, $opt_u, $opt_d); |
---|
20 | |
---|
21 | my $name = 'ENVCAN'; |
---|
22 | my $version = 0.4; |
---|
23 | my $author = 'Joe Ripley'; |
---|
24 | my $email = 'vitaminjoe@gmail.com'; |
---|
25 | my $updateTimeout = 15*60; |
---|
26 | my $retrieveTimeout = 30; |
---|
27 | my @types = ('cclocation', 'station_id', |
---|
28 | 'observation_time', 'observation_time_rfc822', 'weather', |
---|
29 | 'temp', 'relative_humidity', |
---|
30 | 'wind_dir', 'wind_degrees', 'wind_speed', 'wind_gust', |
---|
31 | 'pressure', 'dewpoint', 'heat_index', 'windchill', |
---|
32 | 'visibility', 'weather_icon', 'appt', 'wind_spdgst', |
---|
33 | '3dlocation', '6dlocation', 'date-0', 'icon-0', 'low-0', 'high-0', |
---|
34 | 'date-1', 'icon-1', 'low-1', 'high-1', |
---|
35 | 'date-2', 'icon-2', 'low-2', 'high-2', 'updatetime', |
---|
36 | 'date-3', 'icon-3', 'low-3', 'high-3', |
---|
37 | 'date-4', 'icon-4', 'low-4', 'high-4', |
---|
38 | 'date-5', 'icon-5', 'low-5', 'high-5' ); |
---|
39 | |
---|
40 | my $dir = "./"; |
---|
41 | |
---|
42 | getopts('Tvtlu:d:'); |
---|
43 | |
---|
44 | if (defined $opt_v) { |
---|
45 | print "$name,$version,$author,$email\n"; |
---|
46 | exit 0; |
---|
47 | } |
---|
48 | |
---|
49 | if (defined $opt_T) { |
---|
50 | print "$updateTimeout,$retrieveTimeout\n"; |
---|
51 | exit 0; |
---|
52 | } |
---|
53 | if (defined $opt_l) { |
---|
54 | my $search = shift; |
---|
55 | ENVCANLocation::AddStationIdSearch($search); |
---|
56 | ENVCANLocation::AddRegionIdSearch($search); |
---|
57 | ENVCANLocation::AddCitySearch($search); |
---|
58 | ENVCANLocation::AddProvinceSearch($search); |
---|
59 | my $results = doSearch(); |
---|
60 | my $result; |
---|
61 | while($result = shift @$results) { |
---|
62 | if ($result->{station_id} ne "NA" ) { |
---|
63 | print "$result->{station_id}::"; |
---|
64 | print "$result->{city}, $result->{region_id}\n"; |
---|
65 | } |
---|
66 | } |
---|
67 | |
---|
68 | exit 0; |
---|
69 | |
---|
70 | } |
---|
71 | |
---|
72 | |
---|
73 | if (defined $opt_t) { |
---|
74 | foreach (@types) {print; print "\n";} |
---|
75 | exit 0; |
---|
76 | } |
---|
77 | |
---|
78 | if (defined $opt_d) { |
---|
79 | $dir = $opt_d; |
---|
80 | } |
---|
81 | |
---|
82 | # check variables for defined status |
---|
83 | my $loc = shift; |
---|
84 | if (!(defined $opt_u && defined $loc && !$loc eq "")) { |
---|
85 | die "Invalid usage"; |
---|
86 | } |
---|
87 | |
---|
88 | my $units = $opt_u; |
---|
89 | |
---|
90 | # check for cached data |
---|
91 | my $creationdate; |
---|
92 | my $nextupdate; |
---|
93 | my %results; |
---|
94 | my $getData = 1; |
---|
95 | if (open(CACHE, "$dir/envcan_$loc")) { |
---|
96 | ($nextupdate, $creationdate) = split / /, <CACHE>; |
---|
97 | if (Date_Cmp($nextupdate, "today") > 0) { # use cache |
---|
98 | no strict "vars"; |
---|
99 | %results = eval <CACHE>; |
---|
100 | |
---|
101 | if (%results) { $getData = 0; } |
---|
102 | else { print STDERR "Error parsing cache $@\n"; } |
---|
103 | } |
---|
104 | } |
---|
105 | close(CACHE); |
---|
106 | |
---|
107 | # no cache, grab from the web |
---|
108 | if ($getData) { |
---|
109 | my $base_url = 'http://www.weatheroffice.gc.ca/forecast/city_e.html?'; |
---|
110 | my $response = get $base_url . $loc; |
---|
111 | die unless defined $response; |
---|
112 | |
---|
113 | %results = ENVCANParser::doParse($response, @types); |
---|
114 | $results{'station_id'} = $loc; |
---|
115 | |
---|
116 | # output cache |
---|
117 | open (CACHE, ">$dir/envcan_$loc") or |
---|
118 | die ("Cannot open cache ($dir/envcan_$loc) for writing."); |
---|
119 | $Data::Dumper::Purity = 1; |
---|
120 | $Data::Dumper::Indent = 0; |
---|
121 | |
---|
122 | # cache is good for 15 minutes |
---|
123 | my $newmin = 15; |
---|
124 | |
---|
125 | $nextupdate = DateCalc("today", "+ $newmin minutes"); |
---|
126 | print CACHE UnixDate($nextupdate, "%O ") . UnixDate("today", "%O\n"); |
---|
127 | print CACHE Data::Dumper->Dump([\%results], ['*results']); |
---|
128 | } |
---|
129 | |
---|
130 | # do some quick conversions |
---|
131 | if ($units eq "ENG") { |
---|
132 | $results{'temp'} = int(((9/5) * $results{'temp'}) + 32); |
---|
133 | $results{'dewpoint'} = int(((9/5) * $results{'dewpoint'}) + 32); |
---|
134 | $results{'windchill'} = int(((9/5) * $results{'windchill'}) + 32); |
---|
135 | $results{'appt'} = int(((9/5) * $results{'appt'}) + 32); |
---|
136 | $results{'visibility'} = sprintf("%.1f", ($results{'visibility'} * 0.621371192)); |
---|
137 | $results{'pressure'} = sprintf("%.2f", $results{'pressure'} * 0.0295301); |
---|
138 | $results{'wind_gust'} = sprintf("%.2f", $results{'wind_gust'} * 0.621371192); |
---|
139 | $results{'wind_speed'} = sprintf("%.2f", $results{'wind_speed'} * 0.621371192); |
---|
140 | $results{'wind_spdgst'} = sprintf("%.2f (%.2f) mph", $results{'wind_speed'}, $results{'wind_gust'}); |
---|
141 | |
---|
142 | for (my $i=0;$i<6;$i++) { |
---|
143 | $results{"high-$i"} = int(((9/5) * $results{"high-$i"}) + 32); |
---|
144 | $results{"low-$i"} = int(((9/5) * $results{"low-$i"}) + 32); |
---|
145 | } |
---|
146 | } else { |
---|
147 | $results{'wind_spdgst'} = sprintf("%.2f (%.2f) kph", $results{'wind_speed'}, $results{'wind_gust'}); |
---|
148 | } |
---|
149 | |
---|
150 | |
---|
151 | foreach my $key (sort (keys %results)) { |
---|
152 | print "$key". "::"; |
---|
153 | if (length($results{$key}) == 0) { |
---|
154 | print "NA\n"; |
---|
155 | } else { |
---|
156 | print $results{$key} ."\n"; |
---|
157 | } |
---|
158 | } |
---|
159 | |
---|